The purpose of this report is threefold: First to develop measures of alternative types of student mobility; second to document the magnitudes of each type of mobility in aggregate and by student income, race/ethnicity, and immigrant status; and third to analyze how mobility of different types...

In New York City, elementary and middle school students speak a wide variety of languages in their homes (167) and come from a vast number of countries (192). Over 1 in 10 children are limited English proficient (LEP) and another 3 in 10 are English proficient and from homes where languages...

Major increases in immigration and the shift in immigrant origins over the past three decades have substantially changed the composition of New York City's public schools. Unlike their primarily European predecessors, today's immigrant students come from countries all over the world, speak a...

Recent advances in evolutionary theory have important implications for environmental economics. A short overview is offered of evolutionarythinking in economics. Subsequently, major concepts and approaches inevolutionary biology and evolutionary economics are presented andcompared. Attention is...

Nicholas Georgescu-Roegen was described by Paul Samuelson as 'an economist's economist'. This book honors him by discussing his theories on a wide range of issues but particularly on environmental and energy economics. It is a dynamic tribute which extends his work to address the problems the...